﻿// bsn ModuleStore database versioning
// -----------------------------------
// 
// Copyright 2010 by Arsène von Wyss - avw@gmx.ch
// 
// Development has been supported by Sirius Technologies AG, Basel
// 
// Source:
// 
// https://bsn-modulestore.googlecode.com/hg/
// 
// License:
// 
// The library is distributed under the GNU Lesser General Public License:
// http://www.gnu.org/licenses/lgpl.html
// 
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// 
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Lesser General Public License for more details.
// 
// You should have received a copy of the GNU Lesser General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

using System;
using System.Diagnostics;

using bsn.GoldParser.Semantic;

namespace bsn.ModuleStore.Sql.Script {
	public sealed class TypeNameNamedExtension: TypeNameExtended {
		private readonly Qualified<SchemaName, XmlSchemaCollectionName> extension;
		private readonly bool isMax;

		[Rule("<TypeName> ::= Id ~'(' <XmlSchemaCollectionNameQualified> ~')'")]
		[Rule("<TypeName> ::= QuotedId ~'(' <XmlSchemaCollectionNameQualified> ~')'")]
		public TypeNameNamedExtension(SqlIdentifier identifier, Qualified<SchemaName, XmlSchemaCollectionName> extension): base(identifier) {
			Debug.Assert(extension != null);
			this.extension = extension;
			isMax = !extension.IsQualified && string.Equals(extension.Name.Value, "MAX", StringComparison.OrdinalIgnoreCase);
			if (isMax) {
				this.extension.LockOverride();
			}
		}

		public Qualified<SchemaName, XmlSchemaCollectionName> Extension {
			get {
				return extension;
			}
		}

		public bool IsMax {
			get {
				return isMax;
			}
		}

		protected override void WriteArguments(SqlWriter writer) {
			if (isMax) {
				writer.WriteKeyword("MAX");
			} else {
				writer.WriteScript(extension, WhitespacePadding.None);
			}
		}
	}
}
